The total cost of ancillary services for the week was $569,000 or 0.6 per cent of the total turnover in the energy market. The cost for lower 5 minute services was up by nearly $200,000 on the previous week as a result of a network outage in Victoria for the latter half of the week. The cost for ancillary services in Tasmanian totalled $130,000 or 0.9 per cent of the energy market turnover for that region.

Regulation prices spiked for one despatch interval to $10,000/MW in Tasmania on Wednesday evening when every unit with an offer for regulation was inadvertently made unavailable.